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Share Based Compensation (Stock Option Assumptions) (Details) (USD $)	3 Months Ended
	Apr. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	$ 61.83
Granted, Weighted-Average Grant Date Fair Value	$ 50.62
Assumptions:
Price volatility	0.00%

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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